ui/android/java/res/anim/menu_exit.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
Copyright 2014 The Chromium Authors
Use of this source code is governed by a BSD-style license that can be
found in the LICENSE file.
-->

<set xmlns:android="http://schemas.android.com/apk/res/android" android:shareInterpolator="false">
    <scale android:interpolator="@anim/emphasized"
        android:fromXScale="1"
        android:toXScale="0.5"
        android:fromYScale="1"
        android:toYScale="0.5"
        android:pivotX="@fraction/menu_animation_pivot_x"
        android:pivotY="5%"
        android:duration="150" />
    <alpha android:interpolator="@anim/emphasized"
        android:fromAlpha="1"
        android:toAlpha="0"
        android:duration="150" />
</set>